Sienna Miller, 41, looks typically stylish in a sweeping leather trench after watching Cara Delevingne’s West End debut in Cabaret with rarely seen boyfriend Oli Green, 27

Sienna Miller and boyfriend Oli Green seemed in good spirits as they left Cabaret at the Kit Kat Club at the Playhouse Theater in London on Monday night.

The actress, 42, who welcomed a baby girl with the hunk, 27, in January, cut a stylish figure in a long black leather coat.

She paired the number with high-waisted navy trousers, which she cinched at the waist with a thick, matching belt.

The Anatomy of a Scandal star tucked in a plain black top and stayed comfortable in a pair of black boots.

Sienna styled her blonde locks in a neat updo, accessorized with a pair of gold earrings and carried her belongings in a black clutch.

The actress, 42, who welcomed a baby girl in January with the hunk, 27, cut a stylish figure in a long black leather coat

Sienna applied a glamorous makeup palette, including a touch of bold red lipstick.

Meanwhile, Oli wore an open gray cardigan and black jacket over a plain white T-shirt and jeans.

Cara Delevingne made her stage debut as Sally Bowles in the West End production alongside the Olivier Treadaway-starring Luke, who will star as The Emcee.

Speaking about her exciting new stint, the actress and model said: “There are no words to explain the excitement I have to return home to make my stage debut in such an iconic role.

‘I am so inspired by the brilliant actors who have played Sally in previous productions around the world and in this one in the West End.

“I can’t wait to be part of this brilliant cast and production.”

Luke added: “I can’t wait to join the Kit Kat Club and take part in this extraordinary production. It’s a huge thrill to be asked to take on this and I’m really looking forward to getting started.’

This unique production of Cabaret opened to rave reviews and audiences in December 2021 and has been widely praised as the ultimate theater experience.

In April 2022, the production won a record seven Olivier Awards, the most for any musical revival in Olivier history.

She paired the number with high-waisted navy trousers and a plain black top, while getting comfortable in a pair of black boots.

The Anatomy of a Scandal star tucked in a plain black top and stayed comfy in a pair of black boots

Sienna styled her blonde locks in a neat style, accessorized with a pair of gold earrings and toted her belongings in a black clutch

Meanwhile, Oli wore an open gray cardigan and black jacket over a plain white T-shirt and jeans

The pair looked cheerful as they headed home in the evening, with Sienna lovingly resting her hand on Oli’s leg.

Cara Delevingne made her stage debut as Sally Bowles in the West End production alongside Olivier Treadaway’s award-winning Luke, who will star as The Emcee

The production has also won three prestigious Critics Circle Awards, as well as the Evening Standard Theater Award for Best Design for designer Tom Scutt.

Sienna and Oli were photographed with their newborn in January as they made a stylish outing to a coffee shop in West London in a khaki jacket and jeans with a £3,300 designer Artipoppe baby carrier strapped to her.

The actress already has daughter Marlowe, 10, from her previous relationship with actor Tom Sturridge, 38.

Sienna’s pregnancy was revealed during a beach holiday in August, where she stepped out with a baby bump.

In December, Sienna covered Vogue as she spoke about her pregnancy for the first time and revealed she was having a girl.

In incredible photos taken at the interview, she showed off her bare stomach alongside both Marlowe and boyfriend Oli.

Sienna spoke candidly about her pregnancy and how it was “unplanned,” but admitted she feels “more psychologically prepared” than she did with her firstborn.

During the rare interview, Sienna said Marlowe had been looking for a sibling for some time.

Sienna also said that she had been fighting her own prejudices about being an older mother and that she had to learn to stop making fun of it.